Electra-Massa, managed by S.A. l'Energie de l'Ouest Suisse (EOS) successfully introduced FILARC PZ6166 metal-cored wire for the reconditioning of worn Pelton wheels at their Bitsch hydro power station. Replacing 13%Cr/4%Ni alloyed GMAW solid wire, PZ6166 brings improved weldability, resulting in lower defect rates and less post weld repair. Mechanical properties fully meet the strength requirements and toughness of G-X5CrNi 13 4 cast steel. The repair procedure is described in detail as well as the mechanical testing carried out by EOS to verify weldability and mechanical properties. The article was published in Svetsaren, our customer magazine, issue 1/2000. It is freely downloadable by clicking here.